Type-writing machine.



N. H ANDERSON.

TYPE WRITING MACHINE.v

APPLICATION-FILED MAR. 29. ms.

Patented Jan. 4, 1916 2 SHEETS-SHEET l.

wi/bneooao M I 44M N H; ANDERSON. TYPE WRITING MACHINE.

' APPLICATION FILED MAR. 29. 1913; Llfifi sfifi Patented Jan 4, 1916. 2 SHEETS-SHEET 2.

3 I 1g 15* I8 37 Q 21 7- -22 8 31 a! ll 2s V 27 u 3 m l2 r L2 fi elements and arrangement of parts which NILS H. ANIFEBSOIFT, DE MII DLETOKR N, SONNECTZMUT, ASSIG'NOR. TO THE NOISELESS TYPEWRITEE GONNEfiTIGUZf.

messes I SQMPAHY, 9F MI'J'BLETQWN, CONNECTICUT,

A oonronn'rzon yer TYPE- WRETING MAGHIEE.

slpecrlfication of Letters Patent.

I Entented Jan. 4 1916.

sppiicetien filed March 29, 1913. Serial No. 757,427.

To, all whom i i may concern:

Be it. known that l, llrnsfi. Annnnsois,

citisen of the United States, residing at which it epper'te'lns to make and use the This invention'relnbes to typewriting man chines, and wihh regard to certain more dom nant restores-thereof, to ribbon mechw menu and associated and enacting ports for =-.ontroliing bile position and movement of who ribbon in the vlcinil'. of the rintin One of rho cbjeobs of the present invention is is provide simple and pmcbicel ribbon mechanism when will be durable and eilicicnli in notion,

Another obicct is fro provide a 'rnechenism of the above character which will be inex- 1 pensive to ninnniacture and easy to assen'ible 4 a Y Anoiher omens is to provide improved ribbon guiding and 'aensionrng devices which will be slliol'nzlblc and independent in cum.

()ther objects will be in part obvious and n part pointed out hereinnrter.

. The invention accordingly consists in ihe features of construcpion, combinations 01' will be exemplified inthe construction hereinnfter set fortlnand the scope of the applicotion'of' which will be indicated in the fob lowing-claims, 1

in the accompanying drawings, wherein are shown two of various powible embodiments of this invention,/ Figure 1 is a side elovalxion, partly in section, of such parts of a typewriting machine as are necessary'to understand the invention; Fig. 2 is a plan view of certain parts in normal position; Fig. 3 is a similar yiew with the same parts iii. the position occupied at the printing moment; Fig. 4 is n/iront elevation partly in section; Figs. 5' :lnd 6 are, detoilriewsoff parts of the consruction shown in Fig. 1;

Fig. 7 1s a detail view of a modificaand tionq Similar referencecherecsers refer to sine-i lar ports througho tthe dihierenl; views oi the drawings.

ribbon guides in the accompanying drawings the presour. invention is shown in Fig. l as applied to a Noiseless typewriting machine provide-d.

, with a horizontally reciprocating carriage ll carrying a. platen roller2 and a flat platen 3 of the usual style in machines of this make. This carriage rolls along a shaft rail 4 which is connected by means of edownwardly disposed link 5 eteech end with any desired form of double shift mechanism for movin the carriage up or down from its norms printing position when printing differentv case characters. In the upper part 0 the machine is o bed plate 6 along which a plurality of radially disposed type carriers 7,

having three type each, slide toward andfrom. the printing point when actuatcdlby key-controlled means, not herein shown;

ribbon 8 (Fig. 2) is fed from one ribbon spool 10 to another 11 on the opposite side of the machine. The ribbon is disposed between the type and the printing point 12 at the end of the path of travel of the type '3 in such a manner as to be engaged by the type as they move back and are carried into engagement with the paper on the platen during the printing operation.

As the above-mentioned machine is of the visible front impression style it is desirable to hold the ribbon normally away from the printing line in order that the operator may have an unobstructed view of the printed portion of the page. By moving the ribbon 1 toward and from theplaten in substantially the path of travel of the type carriers there is a decided advantage in the general con-'- s'truction as well as increased efiiciency, as a simpler form. of ribbon guide permitting a straight feed from one spool to the other may be used. It is therefore unnecessary to foid'or turn the ribbon around various corners. thus causing greater wear upon the ribbon and requiring e greater amount of energy to feed the ribbon from one spool to w the other. r

As her-em shown, the ribbon s fed through separate and relativelyfixed ribbon guides, '13, 14 mounted etopposit-e sides of a. type", io-posifoioned adjacent the printingi"j and with respect to which all the 105 guide poms 12, I cype carriers are radially disposed. These sheer; metal and provided with curvededges so prevent undue seer upon the ribbon ens'esch is prevails" are preferably stamped from wish on opening 16 permit the ribbon to he slipped edgewise therethrough without unwinding the ribbon .from the spool and threading the end through the guide. These stationary ribbon guides 13, 14. are secured in anyidesired manner to the upper part of posts l7iwhich' ustable by means of set screws 22 in order that the. ribbon may be properly positioned withrespect'to the type guide 15. If the ribbon interferes with the type guide when shifted, the setscrews 22 may be loosened and the posts moved'in order thatthe edges of the ribbon will not become jammed bet tween the type and guide during the printing operation.

Pivotally mounted upon the posts 17 are swinging guide carrying arms 23, the body portion of which is of stamped sheet metal, as shown in Fig. 5, having a somewhat U- shaped formin order to engage the post at two points 24, 25,, spaced apart sufficiently to provide a secure bearing for the turning movement of the arm. Mounted upon the upper. ends 26 of the body portion of the guide arms are auxiliary ribbon guide eyes 27, 28 of substantially the same form as that mounted upon the upper part of the st 17. Woundabout the post, between the laring points 24, in the upper andlower parts of the body portion of the guide arm 23, is a spiral spring 30, the upper end 31 of which coacts with the arm. 23' and the lower'end 32 passes through one of several openings 33 (Fig. 6) in a supporting collar 34 adjustably mounted upon the post 17 below the guide arm and hold in place by a set screw 35. The lower part of the guide arm is provided with a downwardly projecting lug 36 adapted to coact with 'a flattenedsurface 37 of the collar to prevent overthrow or limit the swing of the guide arm in its rotary movement about the post The tension of the spring may be regulated by inserting the lower part of the spring in. any of the several openings 33 provided in the collar.

The operation of this embodiment of the invention is substantially as follows: As sume the parts to be in the position shown in Fig. 2, the'springs 30 are under. slight tension and the arms 23 are positioned to hold. the ribbon relatively taut .and away from the printing point. The ribbon re- I mains in this position until a type Bltfl'ifii 7 is moved into engagement therewuam where:

. type action is used, the ribbon ribbon guides.

upon it carries the ribbon back into engage-- ment with thepaper upon the platen. The tension exerted on the'ribbo'n by the type carrier will cause the guidetrrms 23 to swing about the posts 17 upon which they are mounted and tighten thesprings. As soon as the type carrier is released the 8' ring will return the guidearms to norma position and again tighten the ribbon.

guide arm at that side'will be actuated to a greater extent than the opposite guide armf" The actual length of the ribbon between "the stationary guides 13, 14 when in normal sition is slightly less-than the amount of ribbon between the same pointsat the printing moment.

The guides 27 and- 28 may really be com sidered separate and independent parts forming a pair of automatically actuated far as they are actuated solely by the typl carrier in contra-distinction to being actuated through the universal bar mechanism or other parts, thereby materially increas.

ing the load upon the key levers required to overcome the momentum and friction oi such parts,

' If it should be desired to adjust the relative'pos'ition of the ribbon either toward or from the platen, or in a vertical direction in order to position the ribbon with respect.

to the type guide 15 this may be easily done by loosening the desired adjusting screws and moving the parts into their new positions.

The modification shown in Fig. 7 is substantially the same in principle as that above described and shown. This figure illustrates a left-hand ribbon guide and comprises a. guide member 40 which is mounted upon the upper end ofthe post 1? in substantially the manner in Whichthe ribbon guides 18 and 142 are mounted.

Secured directly to the post 17 is a collar 42 which is held .in' place by a set screw 43 adapted to support and engage the lower end ofa spiral spring 44. The upper end of this spring extends laterally to one side and is provided with a loop 45 through which the ribbon is adapted to pass. This loop 45 forms an auxiliary guide corresponding to the movable guides 27 and 28,.

as shown in Fig. 4. The relative position of the guide members 40 and 45 may be ad justed vertically and the auxiliaru guide 45 may be adiusted in a. fore andllaft direction by loosening the set screw 43 and turning the guide to the desired angle.

Ah; the operation and method of use of a tension de ice such as above described are substantially the same as that shown in Fig. L further explanation thereof is believed to be unnecessary.

is thus seen that this invontipn If a side I They are automatic in s too filth printina' Having described inVentiQm-What 1 by Letclaim as new anddesire-to secure ters Patent is: V

. 1.. In a typewriting machine, in combination, a platen, a 'typercarrier adapted to coact therewith, ribbon supporting means located at opposite'sides of'the printing point, ribbon guides mounted upon the rib-- bon supporting means adapted to swing about vertical axes toward and from the point, and spring means interposed between the ribbon supporting means and the ribbon guides for yieldingly holding said guides in normal position.

'- 2. In. atypewriting' -macl1ine, in combination, a sbiftable platen carriage, a shift rail along which said carriage is adapted to travel, sujpportine means mounted upon sa1d-sh1ft=rail, and ribbon guides rotatable about-vertical axes mounted upon said supporting means.

3. In atypewriting machine, in combi- .nation, a shiftable-platen carriage, a shift mil along which said carriage is adapted totravel, supporting means. mounted upon saidshit rail, and independently operating ribbon guides mounted at oppositesides of posts on the pri'ntingpoint upon said supporting means. a

4. In atvpewriting; machine, in combination, a shiftable platen and platen carriage, a shift rail along which said carriage is adapted totravel. a bracket projecting from said shift rail, upwardly projecting posts on said bracket, and ribbon guides mounted upon said posts adapted to swing toward and from the platen. 5. In a tvpewriting machine, in combi nation, a shiftable platen and platen carriage, a shift rail along which said carriage is adapted to travel, a bracket projecting from said shift rail, upwardly projecting said bracket, and ribbon guides mounted thereon to swing independently of each other toward and from the printing 6. In a tvpewritinn machine, in. combination, a .riage, a shift rail along which said carriage isadapted to-travel, a bracket projecting from said shift rail, upwardly projecting posts o. n saidbracket. ribbon ou'ides mounted to swine independently of each other toward and-from the, printing line, andautomatic actuating: means for returning said ribbon guides to normal position.

7. Inaflvnewritimr machine, i nation, a shiftable laten and' platen carriage,-e shift railalong which said carriage .said bracket, ribbon a shift platen, and means shift'able platen and platen carn cornbi-.

is adapted to travel, a bracket projecting from said shift rail, upwardly projecting posts on said bracket, relatively stationary ribbon guides mounted onthe upper part of said posts, and auxiliary-ribbon guides associated. therewith movable toward and frcm. the printing line.

8. In a typewriting machine, in combina-- tion, a shi-f table platen and platen carriage, a shift rail edong which said carriage is adapted to travel, a brackctprojecting' from said shift rail, upwardly projecting posts on guides mounted to swing about said posts toward and from the printing line, and spring means for holding said ribbon guides in normal position.

9. In a typcwriting machine, in combine tion, a shiftable platen and platen carriage, rail along which said carriage is adapted to travel, a bracket said shift rail, upwardly projecting posts on said bracket, ribbon guides mounted to swing about said posts toward and from the printing line, spring means for holding said ribbon-guides in normal position, and means for limiting the swinging movement of said guides.

10. In a typewriting machine, in combination, a sliiftable platen carriage, a rail along which said carriage is adapted to travel, a supporting member associated with said rail, and apair of ribbon guides comprising a relatively fixed ands relatively movable ribbon-engaging portion mounted at each side oi the printing point uponsaid supporting member and, shiftab'le with said laten. v

11. In a typewriting machine, in combination, a shiftable platen, carnage, a rail along which said carriage is adapted to travel, a supporting member associated wlth said rail, a pair of ribbon guides comprising a relatively fixed and a relatively movable ribbon-engaging portion mounted ateach side of the printing point upon said supporting member and shiftable with said for adjusting one of said pairs of ribbon guides independently of the other.

12. In a typewriting machine, in combination, a shiftable platen carriage, a rail along which said carriage is adapted to.

travel, a supporting member associated with said rail, a pair of ribbon guides comprising ,a relatively fixed and arelatively movable ribbon-engaging portion mounted at each side of the printing porting member and shiftable with said platen,and means permi ing an independ' ent, ycrtical adjustment of said guides.

13. In a. typewritingmachine, in combi: nation, a shEFteble platen carriage, a rail along which said carriage isljadapted to point upon said sup-- ribbon FAQ travel, a supporting member associated with said rail, a pair of ribbon guides comprising a relatively fixed and a relatively movable ribbon-engaging portion mounted at each side-of the printing point upon aid supporting member and shiftable with-said platen, and means adapted to permit an independent adjustment of said guides fore and aft the machine.

1.4. In a typewriting machine, in combination, a platen carriage, a bracket, :1 pair of upwardly projecting posts adjustably mounted upon said bracket,one at each side of the printing point, a stationary ribbon guide se ured to the upper part. of said posts, pivotally mounted arms adapted to swing about said posts, auxiliary guides -arried by said arms, and spring means for yieldingly holding said arms in normal position.

15. In a typewriting machine, in combination, a platen carriage, a bracket, a pair of upwardly projecting posts adjustably mounted upon said bracket, one at each side of the printing point, a stationary ribbon guide secured to the upper part of said posts, pivotally mounted arms adapted to swing about said posts, auxiliary guides carried by said arms, spring means for yieldingl'y holding said arms in normal position, and means adapted to limit the movement of said arms.

' Id. In a typewriting machine, in combination, a platen carriage, a bracket, :1 pair oi upwardly projecting posts adj ustably mounted upon said bracket, one at each side of the printing point, a stationary ribbon guide secured to the upper part of said posts, pivotally mounted arms adapted to swing about said posts, auxiliary guides carried by said arms, spring means adapted to yieldingly hold said arms in normal position, and

l-means for adjusting said arms in a vertical direction. v v

17. In a typewriting machine, in combination, a platen carriage, a bracket, a pair oi upwardly projecting posts adjustably mounted upon said bracket, one at each side 0 the printing point, a ribbon guide secured to,the upper part of said posts, a collar on rah post belowsaid ribbon guide, an arm supported by said collar and adapted to swing about said post, and means associated with'said arm and collar adapted to limit the rotary movement of said arm.

18. In a typewriting machine, in combination, a platen carriage, a bracket, a pair of upwardly projecting posts adjustably mounted upon said bracket, one at each side of the printing point, a stationary ribbon guide secured to the upper part of said posts, a collar on each post below said ribbon guide, an arm supported by said collar and adapted to swin about said post, means asseciated with sai arm and llar ada ted to limit the rotary movement of said arm, and

a spring coacting with said arm and collar adapted to resiliently hold said arm in normal position.

llbln a trymwriting machine, in combination, a platen carriage, a bracket, a pair of upwardly projecting posts adjustably mounted upon said bracket, one at each side of the printing point, a ribbonguide secured to the upper part of said posts, a collar on each post below said ribbon guide, an arm supported by said collar and adapted to swing about said post, means associated with said arm and collar for limiting the rotary movement of said arm, means coacting with said arm and collar adapted to resiliently hold said arm in normal position, and means adapted to permit an adjustment of the tension'of said spring.

20. In a. typewriting machine, in combination, a platen, a shiitable support therefor,

a type carrier having different case charactors adapted to coact with the platen and ribbon guides'supported from said shii table support adapted to swing toward and from the printing line under the action of the type-carrier as it moves toward and from the platen.

21. In a typewriting machine, in combination, a platen, a shiftable support therefor, a type carrier having different case characters adapted to coact with the platen, ribbon guides supported from said shiftable support adapted to swing toward and from the printing line under the action of the type carrier as it moves toward and from t e platen, and means for limiting the swinging movement of said guides.

22, In a typewritijng machine, in combination, a platen, a shiftable support therefor, a type carrier having different case characters adapted to coact with the platen, ribbon guides supported from said shiftable su port adapted to swing toward and from t e printing lineunder the action of the type carrie' .as it moves toward and from the platen, means for limiting the swinging movement of said guides, and-spring means for yieldingly holding said guides in normalposition. 23. In a typewriting machine, in combination, a platen, a shiftable support therefor, a type carrier having different case characters adapted to enact with the pl..ten, ribbon guides supported from said shiftable support adapted to swing toward and from the printing line under the action of'the type carrier as it moves toward and from the platen, means for limiting the swinging movement of said guides, means for yield ingly holding said guides in normal position, and means for permitting adjustment of said guides relatively to the printing line.

El i- In a typewriting machine, in combination, a platen, a sbiitabie support thereupwardly projecting posts amends for, a plurality. of radially disposed type carriers adapted to coact withsaid platen, adjustably mounted on 'said support, and. a air of rib-, bon. guides mounted on each of said supportsvat opposite sides of the printing point, one of the guides of each pair being movable toward and from the platen by the action of the type carrier.

25. In a typewritin machine, in combination, a platen, a shiftaible support therefor, a plurality of radially disposed type carriers adapted-to coact with, said platen, upwardly projecting posts adjustably mounted on said support, a pair of ribbon guides mounted on each of said posts at opposite sides of the printing point, one of the guides of each pair being relatively fixed and the other movable toward and from the platen by the action of the type carrier, means for limiting the swinging movement of said movable guides, and means for resiliently maintaining said movable guides in normal position.

In testimony whereof I affix my signature, 

